My Lords, I shall be very brief in speaking in support of this amendment, because we have heard the arguments in Committee and on Report. I simply make the point, as chairman of the adaptation sub-committee of the Committee on Climate Change, which I made before, that this is about looking not just now but into the future, when we understand from the climate models that flash surface-water flooding will become more of a problem. It is already a major problem and one of the major sources of flooding in this country and it is going to get worse. So it is rather like the zero-carbon homes amendment that we discussed a few minutes ago. Why on earth would we want to build new developments now that are going to present the residents of those developments with problems with flash flooding in future, when we know that there are straightforward solutions? There is the solution of sustainable urban drainage, not removing the right to connect to the drains altogether, but making a presumption—because that right is not automatic—that developers will use sustainable urban drainage where possible.
If, as the Minister said in the introduction, this amendment is both unnecessary and unworkable—and he gave various reasons—I ask myself why so many professional bodies and why the water industry itself, as the noble Baroness, Lady Parminter, said, support it. Those are the people who really understand, and who are real experts, and it is clear that they think that that is workable and desirable and will achieve greater sustainability for the new developments that will be built in the coming years as a result of the initiatives in this Bill. So I hope that noble Lords will listen to the argument that the noble Baroness made and will recall the arguments heard in Committee and on Report and will support the amendment.